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https://issues.apache.org/jira/browse/KAFKA-4570?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15814218#comment-15814218
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zander commented on KAFKA-4570:
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[~ewencp] In my use case, the user has Access Key and Secret Key and he will
sign the content. For each produce or fetch request, the server need to verify
the sign using the user's Public Key.
I checked the authentication tools currently supported. It seems that my demand
cannot be satisfied now.
> How to transfer extended fields in producing or consuming requests.
> -------------------------------------------------------------------
>
> Key: KAFKA-4570
> URL: https://issues.apache.org/jira/browse/KAFKA-4570
> Project: Kafka
> Issue Type: Wish
> Components: clients
> Affects Versions: 0.10.1.1
> Reporter: zander
> Priority: Critical
> Labels: features
>
> We encounter a problem that we can not transfer extended fields for
> producing or consuming requests to the broker.
> We want to validate the producers or consumers in a custom way other than
> using SSL.
> In general, such as JMS, it is possible to transfer user-related fields to
> server.
> But it seems that Kafka dose not support this, its protocol is very tight and
> unable to add user-defined fields.
> So is there any way achieving this goal ?
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